Car-mover



G.L.BONHAM.

GAR MoyER. APPUCATION FliLED -JULY 6, 1920.

1,391,715. Patendsept. 27,1921.

. 3 SHEETSSHEET l.

G. L. BONHAM. CAR Mom.- PPLICATION FlLED'lUIlY 6, 1920- 1,391,7 1 5. Pmdsept. 27,1921.

- 3 SHE'ETS--SHEET 3.

lGUY L. BONE-A11,- OF lI-IARCT.'FORD, CONNAICTICUT.

oAneMovER.

To all whom 'z't m'ayoono'en."

Be it known that I, L. BQ'NrIAM, a 'citizen et the United, States,l residing at Hartford, in the county of Hartford and f State of Connecticut, have invented a new and useful Car-Mover, of which the follow# ing is a specification. j This invention relates to cai' movers and is designed .more especially as an inpro'venient upon the etrue'tuie disclosedY my rate'nt Ne. 1,343,430, issued te en IJune 15, 1920.

It has been found that 'the thickness yof Car wheels varies at 'diffe'elt 'points along the circumference. Furthermore some; vcar wheels have'uneven eur'ved side surfaces while others have 'neven flat vSide surfaces. One ef the ebjeets er the present invention is to provide a ear 'mover with gripping jaws adapted to adjust themselves to wheels of different thicknesses and 'to uneven surfaces sethat a secure, nen-slipping grip -will be obtained under all conditions;

A etin farther ebjeet ie te provide simpre and e'fhient ineehanisifn whiohhot only 'eiil" abiee the jaws te preteen; grip the wheel therebetween biit also allows the jaws to be simultaneously 'shifted outy oi eng'alement with the wheel prior to being reapp lied to the wheel 'at the beginning 'of the power 'oi' car moving action of the device;

A still further object is to 'provide ineens for protecting the mechanism so that it will not be damaged by careless or rough han# ing. With the foregoing and etheiv objeete in View, which will appear as the description proceeds, the invention resides in the conibination and arrangement of parts and in the detail'so'f Construction hereinafter described and claimed, it being,r iiiiderstood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can b'e iliade without 'de parting from the spirit of the invention.

In the accompanying drawings the preferred forms of the invention have been shown.

In said drawings;k

Figure 1 is a side elevation of the car mover, a portion of the pedestal being broken away.

Fig. 2 is a plan view 'of the yoke or grip@ ping head in peeitien en; e wheel, a pertieii of kwhich has been Shown.

Fig. 3 is an elarg 15613 hl tiet# th Specification of Iietter's Patent. Appneatieii inea 11115' s, 1920. serial ne.

teen iadieated at 4.

Patented sept. 27, 1921.

gripping head, the

msm being sho-wn 'partly in elevation.

F ign@ is a section on line 4`4, F ig. 3.

jaw equaliz'ing mecha; partly in section and Fig: 5 is a section on line 5 5, Fig. 3, the releasing slide being shown in elevation.

F 1g. 6 is a plan View ofthe releasing slide. Figi 7 is a plan view of the yoke or grip*- ping head andshowing a inodiied form of equalifzlng mechanism, the housing of said mechanism being in section. j

Fig". Sis a sectionvon 8-g8, Fig. 7. i Befe'rringt to the gfuresby characters` of reference 1 designates ak pedestal mounted on a base i? adapted tot straddle and to slide iipofJ Iail R. In ythe pedestal is slidably "mounted a curved stem 3A adapted yto be operate'd by a levei` a poition of which has Y TheIk particular means transmitting motion from the lever to 'the stein has not been shown as it constitutes no ipart of Vthe present invention, Such mechanism, however, can be the :same as that vdisclosed in 'my patent hereinbefore mentioned., Y

lA yoke or gripping head 5 is swiveled or otherwise mounted on ,the Aupper endof the stein 3 and is adapted to straddle the peripheral portion of `a car wheel a portion of which has been indicated at W. Mounted for rotation inthe end portions of the yoke are parallel rods 6 to which are Secured gripping, jawsV 7 havingrrtoothed 'aces as indicatedat 8. The rods 6 project gripping Y from 'one face ofthe yoke and are provided with 'orank arms 8 connected by rods V9 to bell cranks 10; .These bell cranks are ful` eruined at l1 on one face of the gripping head, the two bell cranks being oppositely disposed and having their 'upperends conneeted by coiled springr 12. This spring thus acts to pull through the ro'ds`9 upon the crank 8 so as to hold the toothedA faces 8 of the jaws normally drawn toward each other. i y

The lower arnis of the bell cranks 10 are extended toward each other, as shown 'at 13 andoverhang stnd's 14 extending from oppositely projecting arms 15 on aA slide 16. This slide has a longitudinal slot 17 in which is arranged a guide screw 18v or the like. The sides 'of the slide are reduced,V as indicated at 19 andl are lapped by guide screws 20 oithe like. The slide 1)y projects downwrdlybelow the ,gf-ippingI head. A hous` serves to protect the bell cranks 10, crank arms 8, and parts coperating therewith. The slide 16, however, projectsbelow this housing as clearly indicated in Fig. 4.

1t will be apparent that when the'grip-` ping .head is lowered the slide 16 will come into contact with theV upper end of the pedestal 1 and thus be shifted upwardly rela-n upwardly by means of the lever 4 theslide 16 will be lifted off ofthe pedestal 1 whereupon the spring 12 will draw thejaws 8 toward each other and cause them to bind upon opposed faces of thewheel W. This ripping action of the jaws will be equalized automatically and l any variations in thickness or configurationof the wheel will not reduce the gripping action. After the jaws have engage-d the wheel therebetween thev continued upward movement of the stem 3 will result in thesejaws moving the wheel with the ascending head 5 with the result that the wheel will be moved along the rail. By reversing the lever 4 the gripping head will be lowered, the toothed faces of the jaws sliding downwardly along the opposed surfaces of the wheel until the `gripping head reaches its lowermost position at which time'the slide 16 is again actuated to open the jaws and arrange them sofas to readily straddle the wheel whe-n the jack is again slid in the direction thereof.

It is to be understood that other means than those described may be employed for causing the jaws to properly engage wheels of any thickness or having irregular surfaces. Forexample, and as shown in Figs. 7 and 8, the jaws 22 can be provided with rods 23 having'crank arms 24-similar to those' hereinbefore described. Bell cranks 25 are mounted on the gripping head and have their upper arms connected Vby rods 26 to the cranks 24. Furthermore the upper arms of the two 'opposed bell cranks 25 are connected by a spring 2T. The parts thus far described are similar to those shown in Figs. 1 to 6 inclusive. The lower arms of the bell cranks in thismodied structure, however, are connected by links 28 to a cross head 29 pivotally mounted on a stud 30. This stud projects from a slide 31 having a longitudinal slotl32 into which projects a guide screw 33 or the like. A housing 34 is provided for the mechanism described', the lower portion ofthe slide-,31,

however, projecting below the housing.

It will be noted that in this modified construction there is a positive connection between 'the two jaws and should one jaw 22 swing inwardly into engagement with a surface of a wheel, such action being due to the pull exerted by the spring 27, motion would be transmitted through the bell cranks 25 and links 28 to the cross head 29 which would tilt to compensate for any unequal inward movementr of the two jaws.

When the gripping head is lower-ed the slide 31 willcome into contact with the upper end of the pedestal in the same manner jaws 22 to swing apart and thus allow the car mover to be shifted into position and slide the wheel to be moved.` As soon as the gripping head is moved upwardly by means of its .lever the jaws 22 will be brought into engagement with opposed faces of the wheel automaticallyl by the action of the spring 27 but will, obviously, adjust themselves so as to equalize the gripping action upon the two faces. l

`What is claimed is: 1. Ina car mover the combination with a gripping head and means for moving the same upwardly and downwardly, of opposed grippingjaws carried by the gripping head, a spring,means operated by the spring for holding the j awsl normally shifted toward each other, a slide, means controlled bythe lowering of the `gripping head for shifting the sliderelative to said gripping head, and

means operated by the slide for moving the jaws against the action of the spring.

2. In a car mover the combination with a pedestal, a gripping head and means for moving the gripping head toward and from the pede'stahof opposed gripping jaws carried bythe head, yielding means for holding the jaws normally extended toward each other, la member movably connected to the gripping head and movable against the pedestal during, the lowering of said gripping head, and means operated by said member when brought against the pedestal for simultaneously shifting the jaws apart.

3. In a car `mover theV combination with a gripping head, a pedestal, and means for moving the gripping head toward and from the pedestal, of gripping jaws carried by the head, yielding means for holding said jaws normally drawn toward each other, a slide upon the gripping head and movable against the pedestal during the lowering of said head, and means operated by the slide for shifting the jaws apart.

4. In a car mover the combination with a gripping head, a pedestah'and means for moving the gripping head toward and away from the pedestal,1of opposed jaws upon the gripping head, yielding means for holding as heretofore described so as to cause the loo the jaws normally extended toward each y tween their head and against the pedestal, and separate means operated by said slide for shifting the respective jaws to increase the distance begripping faces. Y

5. A car mover including a gripping head, a pedestal, means for moving the gripping head toward and from the pedestal, kopposed bell cranks connected to the gripping heads, opposed jaws carried by the gripping heads, means for transmitting motion from the respective bell cranks to the adjacent jaws, a slide movably connectedy to the gripping head and movable against the pedestal during the lowering of the grippingv head to shift relative to said means operated by the slide for shifting the bell cranks to move the jaws apart, and yielding means connecting the bell cranks for holding the jaws normally extended toward each other. j j

In testimony that I claim the foregoing as my own, I have hereto affixed rnv signature in the presence of two witnesses.

GUY L. BON HAM.

gripping head, and

Witnesses:

HENRY C. WHITMAN, MARY L. WHITMAN. 

